Stanley Proto J47107 9 Piece 12 Point 1/4" Drive Universal Socket Set Set Includes: 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", and 9/16" Universal sockets Helps minimize fastener rounding and extends fastener life Turns worn, rounded and rusted fasteners more easily Engages to the fastener flats, not the corners Minimizes slippage